Airplus Air Purifier – $119.99 Cleans up to 2,500 sq. ft. with dual H13 HEPA filters, a carbon filter for odors, and smart features including auto mode, air quality indicators, and a child lock.

A standard 15-inch-long (381-mm) that’s ideal for internal mounting in furnaces, air handlers, package units, and other equipment with limited duct access and sizes ranging from 3-5 tons. The 15-inch ...